A qos-based virtual link selection method for mobile p2p networks

Abstract

The invention discloses a method for selecting a virtual link of mobile P2P (Peer-to-Peer Networks) based on QoS (Quality of Service). The method comprises the following steps: step S100, enabling a node to obtain an identifier of a mobile P2P network; step S200, establishing a network topological structure; step S300, calculating a virtual link maintenance cost; step S400, calculating the stability of a network virtual link; step S500, calculating an effective bandwidth of the virtual link; step S600, determining a constraint condition of a virtual link selection method; step S700, determining a target function of a virtual link selection scheme; step S800, solving the target function of the selection scheme given in the step S700; and step S900, selecting a virtual link according to a result solved in the step S800. According to the method, not only are key QoS factors affecting the overall working performance of the network such as the stability, the maintenance cost and the effective bandwidth of the mobile P2P network link considered, but the simplicity and the actionability for designing the method are also considered; the method is applied to various mobile terminal deviceswith a limited resource, the network service quality is improved and the network expandability is enhanced.

Description

technical field

[0001] The invention relates to the field of wireless communication networks, in particular to a QoS-based method for selecting a virtual link in a mobile P2P network. Background technique

[0002] With the continuous development of computer network technology, mobile communication technology and computer application technology, a new network technology has emerged, that is, mobile P2P network (Peer-to-Peer Networks, P2P). The mobile P2P network is a session layer overlay network superimposed on the network layer, which can utilize a variety of bandwidth and quality of service underlying access technologies to perform information exchange and resource sharing in a point-to-point manner. All nodes in the network are equal in status, and there is no specific role distinction between nodes (such as server or client). Each node is free in behavior and equal in function. Nodes can be both resource providers and resource providers. is the getter of resources. Mob...

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